in the day of vs at the day of

Some examples from the web:

• Thy people shall be willing in the day of thy power, in the beauties of holiness from the womb of the morning: thou hast the dew of thy youth. Holman Christian ...
• For He says, "In the acceptable time I listened to you, and in the day of salvation I helped you." Behold, now is the time of favor; behold, now is the day of ...
• “In the day of the Lord, the sun will shine”. by M.D. Ridge. From: By Cross and Water Signed [CD] 10060. Looking for a different version? Click on the tabs below ...
• The phrase alludes to a judgment for eternal rewards in 2 Corinthians 1:14 where it says "we are your rejoicing, even as ye also are ours in the day of the Lord ...

Some examples from the web:

• Travellers aged under 16 years at the day of departure
• The marathon training is very challenging and difficult times met are used to find these answers and begin to put them into practice, so as to arrive at the day of the race the runners will be mentally prepared.
• We had a great dinner at the day of arrival.
• For the participation at our kids ski course is valid your age at the day of arrival.
• In some cases, the doctor might tell you to scrub your eyelashes before surgery in order to remove residues on the lashes. At the day of the surgery, some medication might be given in order to make you relax.
• If any kind of unpredictable problem which is not possible to prevent occurs at the day of the beginning of the Reservation, so it could not be realized than the Agency will try to find replacement accommodation from its offer.
• This change can only be done at the airport at the day of your flight.
• If you forget to take Gliolan This medicine is given once only at the day of surgery, 2-4 hours before start of anesthesia.
• Some notaries do not request this paper as they are checking it automatically at the day of the deal.
• For contracts already signed, the remaining duration of the existing contract at the day of closure of the call must be at least 18 months.
• We deliver the equipment to your accomodation and pick it up at the day of your departure.
• It is a good idea to make it clear from the beginning that there will be no treatment at the day of examination, unless this is the expressed wish of the patient, for example, in cases of acute pain.
• Following the administration of a double dose of vaccine, no side-effects other than those described under 4.6 have been observed except for some depression at the day of vaccination
• At the last moment, you took a decision, which you had planned for weeks: at the day of birth, you strangled yourself with the navel cord and let the dead body slip out into the world.
• Make appointments and set up alarms to remind you of upcoming events or meetings at the day of our life. You can assign file names, documents and internet links with your task items and launch them.
• Simple call the main office at (888) 620.0000, if you preffer to send deposit they can provide you with mailing address. Otherwise no deposit is needs, the trip is reserved with your credit card at the day of booking.
• The audit time schedule shall be sent to the auditee before the audit, to ensure availability of responsible persons at the day of the audit.
• The fact that the procession takes place at the day of solennità is an index of 'safe antiquity of the procession itself, invented for a truly popular party.
• The client is obliged to leave the ACCOMMODATION in the same conditions as it was at the day of arrival and has to fulfil the established obligations by the ACCOMMODATION's owner.
• After his death he was proclaimed divus and became the subject of religious rites, for him were erected temples where the priestly colleges devoted festivities at the day of his birth.