transits of Mercury and Venus
=============================
 
 <1> Mercury
 
 <2> Venus
 
please input the planet of interest
? 1
 
please input the calendar date
 
(month [1 - 12], day [1 - 31], year [yyyy])
< for example, october 21, 1986 is input as 10,21,1986 >
< b.c. dates are negative, a.d. dates are positive >
< the day of the month may also include a decimal part >
 
? 5,1,2016
 
please input the geographic latitude of the observer
(degrees [-90 to +90], minutes [0 - 60], seconds [0 - 60])
(north latitudes are positive, south latitudes are negative)
? 39,40,36

please input the geographic longitude of the observer
(degrees [0 - 360], minutes [0 - 60], seconds [0 - 60])
(east longitude is positive, west longitude is negative)
? -104,57,12
 
please input the altitude of the observer (meters)
(positive above sea level, negative below sea level)
? 1644
 
please input the search duration in days
? 30
 
searching for transit conditions ...
 
 
ingress - exterior contact - Mercury
------------------------------------
 
calendar date  	May 9 2016
 
UTC time       	11 hours 12 minutes 11.63 seconds
 
UTC julian day     	2457517.96680127
 
topocentric coordinates of the Sun
 
azimuth angle    	59 deg 47 min 36.72 sec
 
elevation angle  	-7 deg 26 min 27.89 sec
 
 
least distance of the Sun and Mercury
-------------------------------------
 
calendar date  	May 9 2016
 
UTC time       	14 hours 57 minutes 23.42 seconds
 
UTC julian day     	2457518.12318772
 
topocentric coordinates of the Sun
 
azimuth angle    	95 deg 10 min 29.66 sec
 
elevation angle  	34 deg 15 min 12.38 sec
 
 
engress - exterior contact - Mercury
------------------------------------
 
calendar date  	May 9 2016
 
UTC time       	18 hours 42 minutes 27.31 seconds
 
UTC julian day     	2457518.27948281
 
topocentric coordinates of the Sun
 
azimuth angle    	171 deg 18 min 37.76 sec
 
elevation angle  	67 deg 44 min 23.62 sec
 
 
event duration  	7 hours 30 minutes 15.68 seconds
 