There are many occasions when one does not have the option of electing an auspicious muhurtha. In such cases, abhijith muhurtha which is there every day can be of help.
abhijinnama madhyahne muhurto vaishnava smritaha
chakramadaya bhagawan vishnurdoshan vypohati
During abhijith muhurtha, Lord Vishnu himself with his Sudarsanachakra dispels all the evils.
To arrive at abhijith muhurtha, find out the actual duration of the day from sunrise to sunset and divide this into 15 equal divisions. The eighth division from sunrise is called the abhijith muhurtha. This will be on both sides of the mid noon. Two minutes on each side of mid noon should be left as it is varjya.
Example : Sunrise 7:00 am, Sunset 5:15 pm
Day duration = 615 minutes
600 minutes / 15 = 41 minutes
Eighth division starts at 7:00 am +287 minutes = 11:47 am and continues for 41 minutes till 12:28 pm.
The mid noon is at 12:07:30
Two minutes on both sides of this i.e:- 12:05:30 to 12:09:30 is varjya.
Leaving aside these four minutes, the rest of the 37 minutes of abhijith muhurtha is acceptable.