Sunrise & Sunset calculations based on latitude and longitude

Given a smart Wi-Fi light bulb installed by my back door, I found a need to know when to set the bulb to turn On and Off during upcoming weeks. I used the PHP scirpting language to make calculations which I refer to as the seasons change. Sunrise & Sunset calculations for the next 28 days, 24-hour military time, calculations based on Latitude 39.652262, and Longitude -105.059582

DateSunriseSunsetTransitBegin
Twilight
End
Twilight
Daylight
2021-09-1806:4419:0312:5406:1719:3012.32 hours
2021-09-1906:4519:0212:5306:1819:2812.28 hours
2021-09-2006:4619:0012:5306:1919:2712.23 hours
2021-09-2106:4718:5812:5306:2019:2512.19 hours
2021-09-2206:4818:5712:5206:2119:2312.15 hours
2021-09-2306:4918:5512:5206:2219:2212.10 hours
2021-09-2406:5018:5312:5206:2319:2012.06 hours
2021-09-2506:5118:5212:5106:2419:1912.02 hours
2021-09-2606:5218:5012:5106:2519:1711.98 hours
2021-09-2706:5318:4912:5106:2619:1511.93 hours
2021-09-2806:5418:4712:5006:2719:1411.89 hours
2021-09-2906:5418:4512:5006:2819:1211.85 hours
2021-09-3006:5518:4412:5006:2919:1011.80 hours
2021-10-0106:5618:4212:4906:3019:0911.76 hours
2021-10-0206:5718:4012:4906:3119:0711.72 hours
2021-10-0306:5818:3912:4906:3219:0611.67 hours
2021-10-0406:5918:3712:4806:3319:0411.63 hours
2021-10-0507:0018:3612:4806:3419:0211.59 hours
2021-10-0607:0118:3412:4806:3419:0111.55 hours
2021-10-0707:0218:3312:4706:3518:5911.50 hours
2021-10-0807:0318:3112:4706:3618:5811.46 hours
2021-10-0907:0418:2912:4706:3718:5611.42 hours
2021-10-1007:0518:2812:4706:3818:5511.38 hours
2021-10-1107:0618:2612:4606:3918:5311.33 hours
2021-10-1207:0718:2512:4606:4018:5211.29 hours
2021-10-1307:0818:2312:4606:4118:5011.25 hours
2021-10-1407:0918:2212:4606:4218:4911.21 hours
2021-10-1507:1018:2012:4506:4318:4711.17 hours

Created Sat, 18 Sep 2021 16:45:15 -0600

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