Whether using binoculars, a small telescope or the naked-eye, the Heavens-Above
website can help you to find your way around the night-time sky. In addition to detailed
sky charts, their website will help you find planets, asteriods, comets, satellites and their tracks across the sky.
To give accurate results, Heavens-Above requires the latitude and longitude of your location. As a starting point, when we link to Heavens-Above,
we pass this GPS location for Potrero District:
37.759652, -122.398026
Once you're on the Heavens-Above website, you can improve its accuracy by giving a more precise longitude and latitude as your actual position.
We enjoy finding new spots for bird watching and we use the eBird website for local sighting reports and to help identify hotspots.
The eBird website is organized on a county-by-county basis. We have selected San Francisco County as the starting point when you click on the link below:
Curious and Interesting Names Near Potrero District ...
As we travel, we always see a community with a name that gives pause. While there are names which are interesting or familiar, some catch our attention or strike our fancy. We always wonder about such a name. If time permits and the community is not too far, we'll usually try to make a side-trip.
We spend a lot of time looking through Gazetteers, Almanacs & Directories that were published in the late 1800's and early 1900's. Many of the Gazetteers include the distance from a community such as Potrero District to various places of note, such as the White House.
With a nod to our favorite Gazetteers, the straight-line distance<2> beginning in Potrero District and extending to:
Sacramento, which is the State Capital of California, lies 75 miles [120.7 km]<2> to the northeast (NE). If you could drive a straight line from Potrero District to Sacramento, with an average speed<3>of 63 miles [101.4 km] per hour, it would take less than two hours to make the trip. A comfortable walk of 2.2 miles [3.5 km] per hour would take 5 days. A horse and buggy averaging 3.2 miles [5.1 km] per hour would take most of three days.
The White House (Washington, DC) is 2,432 miles [3,913.9 km] to the east northeast (ENE). Driving would take 5 days, a buggy would take 95 days and walking would take 139 days.
The shortest distance<4> to Jerusalem (specifically the Temple Mount and the Dome of the Rock) is 7,415 miles [11,933.3 km] and it lies to the north northeast (NNE).<5>
The distance to the Great Mosque of Mecca (specifically the Ka'bah - or Kaaba ) is 8,182 miles [13,167.7 km] and it lies to the north northeast (NNE).<6>
The distance to Saint Peter's Basilica (The Vatican) is 6,238 miles [10,039.1 km] and it lies to the north northeast (NNE).<7>
Footnotes ...
<1>
The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we found that accuracy can vary and you should double-check the location if accuracy is required.
<2>
Our distances are not driving distances, but are calculated as a 'straight-line' (or point-to-point) distance. A straight line distance ignores things like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- Potrero District) to Point B.Our distance measurements begin at a specific point in Potrero District. The point we use is located at these GPS coordinates - Latitude: 37.7597, Longitude: -122.3980 In this case, the coordinates for Potrero District have been provided by the Geographic Names Information System (GNIS).
<3>
While we have tried to pick reasonable speeds, the rate of travel is very theoretical - obstacles like fences, hills, lakes, river crossings and rest stops have been ignored. When we say 'Days' of travel, we're assuming 8 hours of travel per day.
<4>
The shortest line can be visualized by stretching a string on a Globe from Point A to Point B - this is known as a Great Circle Route. Where you might expect the shortest route from Potrero District to the Middle East to be East and South, the Great Circle Route actually lies to the North and East.
<5>
The calculated bearing (or angle) to Jerusalem is 340.184 degrees.
<6>
The calculated bearing (or angle) to Mecca is 341.132 degrees.
<7>
The calculated bearing (or angle) to the Vatican is 328.152 degrees.